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阻波器的作用是阻止( )电流流过
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阻波器的作用是阻止( )电流流过
A、工频
B、高频
C、雷电
D、故障
时间:2021-09-06 20:42
关键词:
弘成
石家庄职业技术学院
电气安装工程施工与预算
答案解析
B
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